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package com.femass.util;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import org.hibernate.Session;
import org.hibernate.Transaction;

@WebFilter(servletNames = {"Faces Servlet"})
public class HibernateSessionFilter implements Filter{

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
       
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        Session session = HibernateUtil.getSessionFactory().openSession();
        Transaction trx = null;
        
        try {
            
            trx = session.beginTransaction();
            request.setAttribute("session", session);
            
            chain.doFilter(request, response);
            
            trx.commit();
        } catch (Exception e) {
            if(trx!=null)
                trx.rollback();
            
        }
        finally {
            session.close();
        }
    }

    @Override
    public void destroy() {
        
    }
    
}
